Adams will be lucky to develop into Gortat. He is nowhere close to the athlete that Gortat is. He's big and strong and pretty mobile running in a straight line but he's not much of a leaper. He's got some stiffness to him. I think he's a bit too raw without enough physical upside to go any higher than in the 20s.
I would compare Adams to Tiago Splitter. I'd say at the same age they were probably similar athletes. They have similar size. I think Splitter's gotten a touch more athletic since coming to the Spurs. Splitter is pretty good running end to end as well as moving laterally but he's not a dynamic leaper either. Adams would do well to mimic Splitter's pet move of always, I mean, always laying the ball up on the other side of the rim. It's so annoying how defenders just don't play him for the opposite side.
There was a draft article a few years ago which quoted a Denver executive saying this draft class could contain the next wave of great big men. At the time this class included Andre Drummond before he re-classified, Steven Adams, Isaiah Austin, Cameron Ridley and Kaleb Tarczewski, all near or true 7-footers along with power forwards like Grant Jerrett and DaJuan Coleman. That hasn't materialized.